// Licensed to the Apache Software Foundation (ASF) under one
// or more contributor license agreements.  See the NOTICE file
// distributed with this work for additional information
// regarding copyright ownership.  The ASF licenses this file
// to you under the Apache License, Version 2.0 (the
// "License"); you may not use this file except in compliance
// with the License.  You may obtain a copy of the License at
//
//   http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing,
// software distributed under the License is distributed on an
// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
// KIND, either express or implied.  See the License for the
// specific language governing permissions and limitations
// under the License.

package org.apache.doris.qe.runtime;

import java.util.Map;
import java.util.Objects;

public abstract class AbstractRuntimeTask<ChildId, Child extends AbstractRuntimeTask<?, ?>> {
    protected final ChildrenRuntimeTasks<ChildId, Child> childrenTasks;

    public AbstractRuntimeTask(ChildrenRuntimeTasks<ChildId, Child> childrenTasks) {
        this.childrenTasks = Objects.requireNonNull(childrenTasks, "childrenTasks can not be null");
    }

    public void execute() throws Throwable {
        for (Child childrenTask : childrenTasks.allTasks()) {
            childrenTask.execute();
        }
    }

    public Integer getInstanceNum() {
        return childrenTasks.allTasks().stream()
                .mapToInt(Child::getInstanceNum)
                .sum();
    }

    public Map<ChildId, Child> getChildrenTasks() {
        return childrenTasks.allTaskMap();
    }

    protected Child childTask(ChildId childId) {
        return childrenTasks.get(childId);
    }
}
